CVE-2026-18571

Medium

Description

A flaw was found in the user creation component of Keycloak when Fine-Grained Admin Permissions V2 (FGAP V2) is enabled. This issue allows a sub-administrator with permission to create users to add those users to any group, even groups the sub-administrator is not authorized to manage. This could lead to unauthorized access to sensitive information or elevated privileges for the newly created users.

SeverityMedium

CVSS6.6

Exploit probability—

Product

Redhat Build Of Keycloak

PublishedAug 2, 2026

First seenAug 2, 2026

Weakness typeCWE-862Missing authorization

How to fix

Vendor advisories

access.redhat.com/errata/RHSA-2026:68277
access.redhat.com/errata/RHSA-2026:68278

Affected products

Product	Affected versions	Fixed in
redhat build_of_keycloak	No range specified	—

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